12337 Rosemary St

Off Market

12337 Rosemary St

Thornton CO 80602

2491 sq. ft.

0.18 ac.

Single-Family

Last sold for $675,000

Jon-Simon Marquez, last sold this property on 20 March 2026 after 124 days on market.

Overview

Updated 4-bedroom, 3-bath home featuring paid solar, a 3-car garage, new flooring, and a bright garden-level basement in sought-after King Ranch Estates. Enjoy mornings on the covered front porch and evenings on the backyard deck overlooking a landscaped yard with mature plants and a storage shed-perfect for relaxing or entertaining. Inside, the home is bright and inviting with new carpet throughout, luxury vinyl plank flooring on the main level, and an open-concept layout filled with natural light. The kitchen features stainless-steel appliances, granite countertops, a center island, pantry, and an eat-in dining area ideal for gatherings. A built-in desk or work nook just off the kitchen provides a convenient space for remote work or organization, with easy access to the 3-car garage. The family room's gas fireplace adds warmth and comfort on cool Colorado evenings. Upstairs, the spacious primary suite offers a quartzite-finished five-piece bath and an expanded walk-in closet with custom organizers. Three additional bedrooms and a full bath provide flexible space for family, guests, or a home office. The garden-level basement offers excellent natural light and room to expand for a future gym, media room, or additional living area. Recent updates include a newer roof and window screens (1 year), exterior paint (2021), high-efficiency furnace, and a paid solar system for lower energy bills, offering the potential to save hundreds per month compared to today's rising electric costs. Located near King Ranch Park, Platte Trail, and Riverdale Regional Park, with convenient access to shopping, dining, and major routes-just about 30 minutes to downtown Denver or DIA. Nearby schools, parks, and neighborhood amenities add to the appeal, while the established community and tree-lined streets give the area a welcoming, settled feel.

Features

4 bedrooms

3 bathrooms

3 carspaces

3 garage spaces

2491 sq. ft. floor area

0.18 ac. lot size

Single-Family

Estimated Value

Based on this property and similar 4 bedroom single-family properties sold in Thornton over the last 12 months, the estimated median property value of 12337 Rosemary St is $660k.

Median value

$660k

Estimated value range

$435k - $1.4m

Median days on market

Estimated value trend

-6%

decrease over the last 12 months

Average days on market is based on recent, comparable sales in Thornton. It is only an indication of the time a property is actively listed and should not be relied upon as an accurate representation of how soon a property will be sold.

Property history for 12337 Rosemary St

2026

Sold

$675,000

20 Mar 2026 by Jon-Simon Marquez, of Compass - Denver

2017

Sold

$459,900

27 Oct 2017 by Farid Bayot, of Homesmart Cherry Creek

2017

Sold

$450,000

27 Oct 2017 by Farid Bayot

Happy sellers in Thornton

87%

87% of sellers in Thornton reported that their sale price either exceeded or met their price expectations.

Thornton stands out for consistently delivering exceptional satisfaction and strong market results for homeowners.

This is based on voluntary sentiment collected from 22 reviews in Thornton over the last 12 months.

Local market activity for 4 bedroom single-family properties in Thornton

In the last 12 months, 289 four-bedroom single-family properties similar to 12337 Rosemary St, have been sold.

This represents a 6% decrease in four-bedroom single-family properties sales when compared to the previous 12 months.

Sold

For Sale

Interested in selling?

People are reaching out to these agents in Thornton for a market analysis.

Kristen Perry

at RE/MAX Professionals - Larkridge

(39 reviews)

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Ryan Smyle

at RE/MAX Professionals - Larkridge

(32 reviews)

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Megan Denham

at Resident Realty

(35 reviews)

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Shaya Mulder

at Keller Williams Urban Elite

(23 reviews)

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Nearby agents

Compare and contact these top performing agents who’ve delivered exception customer service for their clients in Thornton

Kristen Perry

Sellers who recommend Kristen Perry have praised them for being local expert, clear communication, patient, responsive, detail-oriented, friendly, and well-prepared